The Ahja (Estonian: Ahja jõgi) is a river in Estonia. The river is 103.4 kilometres (64.2 mi) long. The river begins at Lake Erastvere and empties into the Emajõgi River. The river's middle course is protected by the Ahja River Valley Landscape Conservation Area.

You can help expand this article with text translated from the corresponding article in Estonian. (July 2023) Click [show] for important translation instructions. Machine translation, like DeepL or Google Translate, is a useful starting point for translations, but translators must revise errors as necessary and confirm that the translation is accurate, rather than simply copy-pasting machine-translated text into the English Wikipedia. Do not translate text that appears unreliable or low-quality. If possible, verify the text with references provided in the foreign-language article. You must provide copyright attribution in the edit summary accompanying your translation by providing an interlanguage link to the source of your translation. A model attribution edit summary is Content in this edit is translated from the existing Estonian Wikipedia article at [[:et:Ahja jõgi]]; see its history for attribution. You may also add the template {{Translated|et|Ahja jõgi}} to the talk page. For more guidance, see Wikipedia:Translation.

Quick Facts Location, Country ...

Ahja
The Ahja River
Location of mouth
Location
Country	Estonia
Physical characteristics
Source
• location	Lake Erastvere
• elevation	87 m (285 ft)
Mouth	Emajõgi
• coordinates	58°23′6″N 27°9′27″E
Length	103.4 km (64.2 mi)
Basin size	1,074.3 km2 (414.8 sq mi)
Basin features
Progression	Emajõgi→ Lake Peipus→ Narva→ Gulf of Finland

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• The Ahja in Lääniste in 2008
• The Ahja near Valgemetsa
• Kiidjärve watermill, built in 1914
• Taevaskoja
• Winter in 2016